<?php
// start PHP session
session_start();
// load error handling script and validation class
require_once ('error_handler.php');
require_once ('validate.class.php');

// Create new validator object
$validator = new Validate();

// read validation type (PHP or AJAX?)
$validationType = '';
if (isset($_GET['validationType']))
{
	$validationType = $_GET['validationType'];
}

// AJAX validation or PHP validation?
if ($validationType == 'php')
{
	// PHP validation is performed by the ValidatePHP method, which returns
	// the page the visitor should be redirected to (which is allok.php if
	// all the data is valid, or back to index.php if not)
	header("Location:" . $validator->ValidatePHP());
}
else
{
	// AJAX validation is performed by the ValidateAJAX method. The results
	// are used to form an XML document that is sent back to the client
	$response =
   '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' .
   '<response>' .
     '<result>' .
	$validator->ValidateAJAX($_POST['inputValue'], $_POST['fieldID']) .
     '</result>' .
     '<fieldid>' .
	$_POST['fieldID'] .
     '</fieldid>' .
   '</response>'; 
	// generate the response
	if(ob_get_length()) ob_clean();
	header('Content-Type: text/xml');
	echo $response;
}
?>
